-15 is 15 below o
you are adding 4 , so you are getting closer to 0
so you would actually use subtraction, 15-4 = 11
since 15 is negative, and you are adding a number smaller than 15, the answer would be negative so it would be -11
1) given
2) definition of an angle bisector
3) reflexive
4)
(ASA)
5)
(CPCTC)
A regular dice ???????????
Answer:
There would be 45 stars in a stage 15 patteren